struct NArray_node *insertNArrayNode (struct NArray_node *,char *);
struct NArray_node *searchNArrayNode (struct NArray_node *,char *);
void inOrder1 (struct NArray_node *);
void preOrder1 (struct NArray_node *);
void postOrder1 (struct NArray_node *);
void freeNArrayNode (struct NArray_node *);
void copyString (char *, char *);
char *split(char *);
char *truncateLeft(char *, int );
int stringLength (char *);
char *checkRoot (char *);
char *strconcat (char *, char *);
